Just my two cents. If the ex girlfriend was so afraid of him, why did she accept his car? If I had an ex who I believed was making bombs and was afraid of him poisoning me, I wouldn't want the car or laptop for fear that it could be rigged. Also, who knows what went through his head with all of this. Yes, he destroyed peoples livelihoods by destroying their businesses, but considering he did this in the manner to not harm people, maybe he thought business owners would be better off... that maybe the government and people would provide enough help, more than what they might have been getting before. Maybe, maybe not.